<template>
  <div class="my-counter">
    <button @click="jianshao" type="button" class="btn btn-light" >-</button>
    <input v-model.number="goods.goods_count" type="number" class="form-control inp" >
    <button @click="tianjia" type="button" class="btn btn-light">+</button>
  </div>
</template>

<script>
export default {
  props:{
    goods:{
      type:Object,
      required:true
    }
  },
  methods:{
    tianjia(){
      this.goods.goods_count++
    },
    jianshao(){
      if (this.goods.goods_count>1) {
        this.goods.goods_count--;
      }
    }
  
  },
  watch:{
goods:{
  deep:true,
  handler(){
    if(this.goods.goods_count<1)this.goods.goods_count=1
  }
}
  }
}
</script>

<style lang="less" scoped>
.my-counter {
  display: flex;
  .inp {
    width: 45px;
    text-align: center;
    margin: 0 10px;
  }
  .btn, .inp{
    transform: scale(0.9);
  }
}
</style>